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Restructuring and Related Charges (Credits), Activity (Details) $ in Thousands	3 Months Ended
	Jul. 31, 2022 USD ($)
Fiscal Year 2023 Restructuring Program [Member]
Activity for Restructuring and Related Charges Liability [Roll Forward]
Restructuring liability, beginning of period	$ 0
Charges/(Credits)	12,097
Payments	(3,795)
Foreign translation & other adjustments	30
Restructuring liability, end of period	8,332
Fiscal Year 2023 Restructuring Program [Member] | Severance and Termination Benefits [Member]
Activity for Restructuring and Related Charges Liability [Roll Forward]
Restructuring liability, beginning of period	0
Charges/(Credits)	12,097
Payments	(3,795)
Foreign translation & other adjustments	30
Restructuring liability, end of period	8,332
Business Optimization Program [Member]
Activity for Restructuring and Related Charges Liability [Roll Forward]
Restructuring liability, beginning of period	2,079
Charges/(Credits)	(114)
Payments	(100)
Foreign translation & other adjustments	(30)
Restructuring liability, end of period	1,835
Business Optimization Program [Member] | Severance and Termination Benefits [Member]
Activity for Restructuring and Related Charges Liability [Roll Forward]
Restructuring liability, beginning of period	2,079
Charges/(Credits)	(114)
Payments	(100)
Foreign translation & other adjustments	(30)
Restructuring liability, end of period	$ 1,835

X

- Definition

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-URI https://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 17
-Subparagraph (f)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3367-108585

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-URI https://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 5.P.4(b)(2))
-URI https://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

Name:	us-gaap_RestructuringReserveRollForward
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of increase (decrease) in the restructuring reserve related to foreign currency translation (gain) loss and other increases (decreases).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 5.P.4(b)(2))
-URI https://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-URI https://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Restructuring charges for research and professional development, net of related reversal of severance provisions previously recorded by the Company, excluding impairment of ROU assets and property and equipment and facility charges.

+ References

No definition available.

+ Details

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Namespace Prefix:	wly_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	us-gaap_RestructuringPlanAxis=wly_NewRestructuringProgramMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RestructuringCostAndReserveAxis=us-gaap_EmployeeSeveranceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RestructuringPlanAxis=wly_BusinessOptimizationProgramMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: